On 11/20/2010 01:25 PM, Sam Przyswa wrote: > Hi, > > For the first time I have a problem after remove a physical volume with > the command "pvremove". the partition was /dev/sdb4 and after the > "pvremove /dev/sdb4" command I got an error and the pvdisplay give me: > > ------------------------------------------------------- > Couldn't find device with uuid '2KFcH6-vX6o-2olV-CuAN-iSbQ-HwOz-SKlkoe'. > --- Physical volume --- > PV Name unknown device > VG Name Disk1 > PV Size 127,63 GiB / not usable 874,50 KiB > Allocatable yes > PE Size 4,00 MiB > Total PE 32673 > Free PE 32673 > Allocated PE 0 > PV UUID 2KFcH6-vX6o-2olV-CuAN-iSbQ-HwOz-SKlkoe > > ------------------------------------------------------- > > How to fix it ? > > It seems I have an other PV corrupted, is it a way to restore/fix a LVM > with a tool as fsck for filesystems ? It looks like you ran pvremove while the PV was in a volume group: > VG Name Disk1 So the PV is still known to the system (as the UUID is still listed in the metadata contained on the other devices) but it can no longer be found since the label was erased with pvremove. Normally the tools will refuse to do that unless you specify the "force" and "yes" flags on the command line, e.g.: # pvremove /dev/loop1 Can't pvremove physical volume "/dev/loop1" of volume group "tvg0" without -ff Even then you have to confirm it: # pvremove -ff /dev/loop1 Really WIPE LABELS from physical volume "/dev/loop1" of volume group "tvg0" [y/n]? y WARNING: Wiping physical volume label from /dev/loop1 of volume group "tvg0" Labels on physical volume "/dev/loop1" successfully wiped # pvdisplay Couldn't find device with uuid xR7FMN-Ps9T-39mE-rq7h-ijek-PxmR-3emALh. --- Physical volume --- PV Name unknown device VG Name tvg0 PV Size 64.00 MiB / not usable 4.00 MiB Allocatable yes PE Size 4.00 MiB Total PE 15 Free PE 15 Allocated PE 0 PV UUID xR7FMN-Ps9T-39mE-rq7h-ijek-PxmR-3emALh You can recover the VG easily though. Run pvcreate on the device giving it the UUID of the missing disk (just make sure you run it on the correct device!). You'll also want to find the most recent backup of the VG in the /etc/lvm/archive directory. First re-create the device, e.g.: pvcreate --uuid=xR7FMN-Ps9T-39mE-rq7h-ijek-PxmR-3emALh /dev/loop1 --restorefile=/etc/lvm/archive/tvg0_00002.vg The "--restorefile" is important to make sure the new PV is suitable for restoring the metadata backup to. Then restore the VG metadata: vgcfgrestore -f /etc/lvm/archive/tvg0_00002.vg tvg0 # pvdisplay --- Physical volume --- PV Name /dev/loop1 VG Name tvg0 PV Size 64.00 MiB / not usable 4.00 MiB Allocatable yes PE Size 4.00 MiB Total PE 15 Free PE 15 Allocated PE 0 PV UUID xR7FMN-Ps9T-39mE-rq7h-ijek-PxmR-3emALh Regards, Bryn. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/